Sewing machine



FIG. 1 is a perspective view of a sewing machine;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a cross-sectional view thereof taken along the line 8—8 of FIG. 2.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a sewing machine, as shown and described. 